scott



Sheet 1.

3 Sheets (No Model.)

W. SCOTT.

DAMPENING MACHINE.

Patented June 17, 1890.

(No Model.) 3 Sheets-Sheet 3.

W. SCOTT.- DAMPENING MACHINE.

No. 430,256. Patented June 17, 1890.

UNITED STATES PATENT OFFICE.

TVALTER SCOTT, OF PLAINFIELD, NElV JERSEY.

DAM PENING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 430,256, dated June 17,1890.

Application filed November 25, 1889. Serial No. 331,434. (No model.)

To all whom it may concern:

Be it known that I, WALTER Sco'rr, a citizen "of the United States,'residingatPlainfield, in the county of Union and State of New Jersey,have invented an Improvement in Dampening-Machines, of which thefollowing is a specification.

The object of this invention is to apply water in the form of a finespray .to the surface of paper as such paper is unwound from one rolland wound up again in the form of aroll. The water is supplied in aregular quantity to the surface of a rapidly-revolving cylinder having aribbed or plain surface, and the water is thrown off such cylinder,preferably against a deflector, and scattered in the form of sprayagainst the under surfaces of the paper or other fabric in its passagealong through the machine.

In the drawings, Figure 1 is a longitudinal section of the machine. Fig.2 is a cross-sec tion, in larger size, of the end portions of thecylinder and adjacent mechanism. Fig. 3is a similar plan view of thecentrifugal cylin-' der and the vessel for holding the water and theparts adjacent thereto; and Fig. 4 is a de tached view, in large size,of the bottom parts of the cylinder and shells.

The roll of paper A is upon an axis or spool B, that is supported bysuitable frames 0, and there is a winding-up drum D upon a shaft 2,supported by the frame 0, and the web of paper is wound upon a shaft 3,resting in forked bearings at the end of the crank-arms E upon the shafti, and there is a gear-wheel or segment F gearing into a pinion G, towhich a friction-brake H is applied similar to the devices shown in mypatent, No. 272,588, dated February 20, 1883, so that as the roll ofpaper increasesin diameteras it is wound upon the shaft 3 pressure isexerted against the paper by the winding-drum D in consequence of thefriction upon the pinion G. a The power made use of is applied to theshaft 2 of the winding-drum by any suitable pulley and belt, and afriction mechanism is preferably provided to act upon thedriving-pulley, so as to prevent the momentum of the parts fromcontinuing the motion after the driving-belt has been thrown upon theloose pulley to stop the movement of the paper.

My improvement relates especially to the devices hereinafter describedfor applying rise above the same, and so that the other parts of thedampening apparatus may be supported by the water-box, in order thatsurplus water running on the parts maybe returned into said box. Theshaft L carries the centrifugal cylinder M, the surface of iWlllCllIlSeither smooth or provided with projections, preferably in the form ofperipheral corrugations, and there are collars 7 upon the shaftL, thatprevent water passing to the journal-boxes 6.

WVithin the water-box K are end plates N and a side plate N, forming aninclosure to the centrifugal cylinder M, and the distance between theend plates N should be as great as the width of the widest web of paperthat is to be dampened in the machine, and these side and end plates arepreferably castings bolted together, and there is preferably adeflector-plate P between the end plates N, that passes across beneaththe web of paper, and it is attached to the side plates by bolts 8, sothat it may be placed at any desired angle to the drops of water thatare thrown against the same by the centrifugal action when the cylinderM is rapidly revolved, and such drops of water are by their momentumbroken up into fine spray by striking the plate P, and the spray isdeflected or thrown up against the under side of the web of paper 5 asit passes along from the guide-r0111 to the winding-drum D, and anysurplus water is retained between the side. and end plates and runs backinto the water-box in consequence of the side and end plates extendingalmost up to the paper, and there are movable top plates D that can beplaced and held in the required position for contracting the width ofthe spray to the Width of the web of paper.

It is important to regulate exactly the quantity of water applied to thesurface of the paper, so that the dampening operation may be uniform andof the required extent. To

elfect this object water in a regulated quantity may be admitted by acock P into the box K; but .I prefer to partially surround thecentrifugal cylinder M with the two-part shell S S. Each shell is madeas a segment of a cylinder. The shell S is provided with flanges 10 orother suitable devices, by which it is connected to the end plates N,and the curved portion of this shell extends around the centrifugalcylinder M from the bottom of such cylinder, and the upper edge 11 isnear the top of the cylinder and preferably in such a position that atangent projected from the upper edge of this shell will intersect thecentral portion of the deflector-plate P; hence this shell S willconfine the water to the surface of the centrifugal cylinder lWl untilsuch water is thrown off with rapidity in the form of a fine spray, andthe drops strike against the said deflector-plate P and are also dividedinto sprays, as aforesaid.

The shell S is preferably a segment of a cylinder and its lower edgecoincides with the lower edge of the shell S, and the end portions 12 ofthe shell S are extended up to the pivots 13, so that this shell can beswung upon the said pivots to open or close thelongitudinal slot betweenthe lower edges of the shells S and S and thereby regulate the quantityof water admitted within such shells, and it is to be observed that theend portions of the respective shells lap past each other, as indicatedin Fig. 3, so that there is no opportunity for water to pass into theshells except through the longitudinal slot between the the lower edgesof such shells S S, and by swinging the shell S upon the pivots 13 suchlongitudinal slot can be opened or closed more or less and the supply ofwater accurately adjusted.

In order to give motion to the shell S any suitable means may beemployed. I have, however, represented one of the pivots 13 as providedwith a lever-arm Q, passing out beneath the cam-lever R and providedwith an adjusting-screw, against which such cam-lever acts, and it willbe now apparent that the weight of the shell as it hangs upon the pivots13 will tend to swing such shell S toward the stationary shell S andthat by moving the cam-lever R its cam end will act upon the arm Q andopen. the slot or mouth between the shells S and 'S' to any desiredextent, so that the required quantity of water will be admitted from thebox into the shell in pro portion to the speed of the paper and thedampness required.

The shaft L of the centrifugal cylinder M is provided with a pulley 15for a drivingbelt, and the speed of rotation can be sufficiently highsayabout eleven hundred revolutions a ininutefor the centrifugal action todivide the drops of water into fine-spray as they are thrown on. fromthe cylinder or deflected from the plates P.

If the water is admitted gradually to th box K by the cock, the shells SS may be dispensed with, or the quantity of water thrown off may beregulated by the velocity of the cylinder, and when the cock I isprovided 2. In a paper-dampening machine, the combination, with arevolving centrifugal cylinder, of a shell partially surrounding thelower side of such centrifugal cylinder, and means for admitting aregulated quantity of water into the shell, substantially as set forth.

3. The combination, in a dampening apparatus, of a centrifugal cylinder,a two-part shell partially surrounding such cylinder, and mechanism formoving one portion of the shell in relation to the other for opening andclosing the longitudinal aperture for the admission of the water beneaththe centrifugal cylinder, substantially asset forth,

4. In a dampening apparatus for a web of paper, the combination, withthe means for holding the roll of paper and for winding the same up, ofa water-box beneath the web of paper, a centrifugal cylinder and itsshaft, side and end plates, a deflecting-plate beneath the web of paper,and a shell partially surrounding the centrifugal cylinder for directingthe particles of water thrown off by the centrifugal cylinder,substantially as set forth.

5. The combination, with a revolving centrifugal cylinder and thewater-box for the same, of a deflector-plate, a two-part shell partiallysurrounding the centrifugal cylinder, pivots upon which one part of theshell is hung, a lever-arm, and mechanism for acting upon the lever-armto swing the moving shell and vary the opening between the moving andstationary shell, substantially as set forth.

6. The centrifugal cylinder having peripheral corrugations, incombination with the water box, the means for supporting and movingalong a web of paper, and an inclosure directing the water to thepaper,substantially as set forth.

7. The combination, with the centrifugal cylinder and water-box, of theend plates and the separate adjustable top plates above the cylinder fordirecting .the water-spray upon the under side of the moving web ofpaper, substantially as set forth.

Signed by me this 22d day of November, 1889.

WALTER SCOTT.

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